The rings in this image surround a black hole that is part of a binary system called V404 Cygni. Located about 7,800 light years away from Earth, the black hole is sucking material away from a companion star. The material in the rings glows in x-rays, so astronomers refer to such systems as “x-ray binaries.” The x-ray images of the rings were captured by the Chandra X-ray Observatory and the Neil Gehrels Swift Observatory. (I designed some of the assemblies in the power and thermal control systems for one of the instruments on Swift.)
X-ray: NASA / CXC / U.Wisc-Madison / S. Heinz et al.
Optical / IR: Pan-STARR